<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" />
<title>MockSecurityManager xref</title>
<link type="text/css" rel="stylesheet" href="../../../../../stylesheet.css" />
</head>
<body>
<pre>

<a name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a name="2" href="#2">2</a>   <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one</em>
<a name="3" href="#3">3</a>   <em class="jxr_comment"> * or more contributor license agreements.  See the NOTICE file</em>
<a name="4" href="#4">4</a>   <em class="jxr_comment"> * distributed with this work for additional information</em>
<a name="5" href="#5">5</a>   <em class="jxr_comment"> * regarding copyright ownership.  The ASF licenses this file</em>
<a name="6" href="#6">6</a>   <em class="jxr_comment"> * to you under the Apache License, Version 2.0 (the</em>
<a name="7" href="#7">7</a>   <em class="jxr_comment"> * "License"); you may not use this file except in compliance</em>
<a name="8" href="#8">8</a>   <em class="jxr_comment"> * with the License.  You may obtain a copy of the License at</em>
<a name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a name="10" href="#10">10</a>  <em class="jxr_comment"> *    <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="11" href="#11">11</a>  <em class="jxr_comment"> *</em>
<a name="12" href="#12">12</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing,</em>
<a name="13" href="#13">13</a>  <em class="jxr_comment"> * software distributed under the License is distributed on an</em>
<a name="14" href="#14">14</a>  <em class="jxr_comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em>
<a name="15" href="#15">15</a>  <em class="jxr_comment"> * KIND, either express or implied.  See the License for the</em>
<a name="16" href="#16">16</a>  <em class="jxr_comment"> * specific language governing permissions and limitations</em>
<a name="17" href="#17">17</a>  <em class="jxr_comment"> * under the License.</em>
<a name="18" href="#18">18</a>  <em class="jxr_comment"> */</em> 
<a name="19" href="#19">19</a>   
<a name="20" href="#20">20</a>  <strong class="jxr_keyword">package</strong> org.apache.commons.logging.security;
<a name="21" href="#21">21</a>  
<a name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> java.io.FilePermission;
<a name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> java.security.Permission;
<a name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> java.security.Permissions;
<a name="25" href="#25">25</a>  
<a name="26" href="#26">26</a>  
<a name="27" href="#27">27</a>  <em class="jxr_javadoccomment">/**</em>
<a name="28" href="#28">28</a>  <em class="jxr_javadoccomment"> * Custom implementation of a security manager, so we can control the</em>
<a name="29" href="#29">29</a>  <em class="jxr_javadoccomment"> * security environment for tests in this package.</em>
<a name="30" href="#30">30</a>  <em class="jxr_javadoccomment"> */</em>
<a name="31" href="#31">31</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/commons/logging/security/MockSecurityManager.html">MockSecurityManager</a> <strong class="jxr_keyword">extends</strong> SecurityManager {
<a name="32" href="#32">32</a>  
<a name="33" href="#33">33</a>      <strong class="jxr_keyword">private</strong> Permissions permissions = <strong class="jxr_keyword">new</strong> Permissions();
<a name="34" href="#34">34</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Permission setSecurityManagerPerm =
<a name="35" href="#35">35</a>          <strong class="jxr_keyword">new</strong> RuntimePermission(<span class="jxr_string">"setSecurityManager"</span>);
<a name="36" href="#36">36</a>      
<a name="37" href="#37">37</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> untrustedCodeCount = 0;
<a name="38" href="#38">38</a>  
<a name="39" href="#39">39</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/commons/logging/security/MockSecurityManager.html">MockSecurityManager</a>() {
<a name="40" href="#40">40</a>          permissions.add(setSecurityManagerPerm);
<a name="41" href="#41">41</a>      }
<a name="42" href="#42">42</a>  
<a name="43" href="#43">43</a>      <em class="jxr_javadoccomment">/**</em>
<a name="44" href="#44">44</a>  <em class="jxr_javadoccomment">     * Define the set of permissions to be granted to classes in the o.a.c.l package,</em>
<a name="45" href="#45">45</a>  <em class="jxr_javadoccomment">     * but NOT to unit-test classes in o.a.c.l.security package.</em>
<a name="46" href="#46">46</a>  <em class="jxr_javadoccomment">     */</em>
<a name="47" href="#47">47</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addPermission(Permission p) {
<a name="48" href="#48">48</a>          permissions.add(p);
<a name="49" href="#49">49</a>      }
<a name="50" href="#50">50</a>  
<a name="51" href="#51">51</a>      <em class="jxr_javadoccomment">/**</em>
<a name="52" href="#52">52</a>  <em class="jxr_javadoccomment">     * This returns the number of times that a check of a permission failed</em>
<a name="53" href="#53">53</a>  <em class="jxr_javadoccomment">     * due to stack-walking tracing up into untrusted code. Any non-zero</em>
<a name="54" href="#54">54</a>  <em class="jxr_javadoccomment">     * value indicates a bug in JCL, ie a situation where code was not</em>
<a name="55" href="#55">55</a>  <em class="jxr_javadoccomment">     * correctly wrapped in an AccessController block. The result of such a</em>
<a name="56" href="#56">56</a>  <em class="jxr_javadoccomment">     * bug is that signing JCL is not sufficient to allow JCL to perform</em>
<a name="57" href="#57">57</a>  <em class="jxr_javadoccomment">     * the operation; the caller would need to be signed too. </em>
<a name="58" href="#58">58</a>  <em class="jxr_javadoccomment">     */</em>
<a name="59" href="#59">59</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getUntrustedCodeCount() {
<a name="60" href="#60">60</a>          <strong class="jxr_keyword">return</strong> untrustedCodeCount;
<a name="61" href="#61">61</a>      }
<a name="62" href="#62">62</a>  
<a name="63" href="#63">63</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> checkPermission(Permission p) <strong class="jxr_keyword">throws</strong> SecurityException {
<a name="64" href="#64">64</a>          <strong class="jxr_keyword">if</strong> (setSecurityManagerPerm.implies(p)) {
<a name="65" href="#65">65</a>              <em class="jxr_comment">// ok, allow this; we don't want to block any calls to setSecurityManager</em>
<a name="66" href="#66">66</a>              <em class="jxr_comment">// otherwise this custom security manager cannot be reset to the original.</em>
<a name="67" href="#67">67</a>              <em class="jxr_comment">// System.out.println("setSecurityManager: granted");</em>
<a name="68" href="#68">68</a>              <strong class="jxr_keyword">return</strong>;
<a name="69" href="#69">69</a>          }
<a name="70" href="#70">70</a>  
<a name="71" href="#71">71</a>          <em class="jxr_comment">// Allow read-only access to files, as this is needed to load classes!</em>
<a name="72" href="#72">72</a>          <em class="jxr_comment">// Ideally, we would limit this to just .class and .jar files.</em>
<a name="73" href="#73">73</a>          <strong class="jxr_keyword">if</strong> (p instanceof FilePermission) {
<a name="74" href="#74">74</a>            FilePermission fp = (FilePermission) p;
<a name="75" href="#75">75</a>            <strong class="jxr_keyword">if</strong> (fp.getActions().equals(<span class="jxr_string">"read"</span>)) {
<a name="76" href="#76">76</a>              <em class="jxr_comment">// System.out.println("Permit read of files");</em>
<a name="77" href="#77">77</a>              <strong class="jxr_keyword">return</strong>;
<a name="78" href="#78">78</a>            }
<a name="79" href="#79">79</a>          }
<a name="80" href="#80">80</a>  
<a name="81" href="#81">81</a>          System.out.println(<span class="jxr_string">"\n\ntesting permission:"</span> + p.getClass() + <span class="jxr_string">":"</span>+ p);
<a name="82" href="#82">82</a>  
<a name="83" href="#83">83</a>          Exception e = <strong class="jxr_keyword">new</strong> Exception();
<a name="84" href="#84">84</a>          e.fillInStackTrace();
<a name="85" href="#85">85</a>          StackTraceElement[] stack = e.getStackTrace();
<a name="86" href="#86">86</a>          
<a name="87" href="#87">87</a>          <em class="jxr_comment">// scan the call stack from most recent to oldest.</em>
<a name="88" href="#88">88</a>          <em class="jxr_comment">// start at 1 to skip the entry in the stack for this method</em>
<a name="89" href="#89">89</a>          <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i=1; i&lt;stack.length; ++i) {
<a name="90" href="#90">90</a>              String cname = stack[i].getClassName();
<a name="91" href="#91">91</a>              System.out.println(<span class="jxr_string">""</span> + i + <span class="jxr_string">":"</span> + stack[i].getClassName() + 
<a name="92" href="#92">92</a>                <span class="jxr_string">"."</span> + stack[i].getMethodName());
<a name="93" href="#93">93</a>  
<a name="94" href="#94">94</a>              <strong class="jxr_keyword">if</strong> (cname.equals(<span class="jxr_string">"java.security.AccessController"</span>)) {
<a name="95" href="#95">95</a>                  <em class="jxr_comment">// Presumably method name equals "doPrivileged"</em>
<a name="96" href="#96">96</a>                  <em class="jxr_comment">//</em>
<a name="97" href="#97">97</a>                  <em class="jxr_comment">// The previous iteration of this loop verified that the</em>
<a name="98" href="#98">98</a>                  <em class="jxr_comment">// PrivilegedAction.run method associated with this</em>
<a name="99" href="#99">99</a>                  <em class="jxr_comment">// doPrivileged method call had the right permissions,</em>
<a name="100" href="#100">100</a>                 <em class="jxr_comment">// so we just return here. Effectively, the method invoking</em>
<a name="101" href="#101">101</a>                 <em class="jxr_comment">// doPrivileged asserted that it checked the input params</em>
<a name="102" href="#102">102</a>                 <em class="jxr_comment">// and found them safe, and that code is trusted, so we</em>
<a name="103" href="#103">103</a>                 <em class="jxr_comment">// don't need to check the trust level of code higher in</em>
<a name="104" href="#104">104</a>                 <em class="jxr_comment">// the call stack.</em>
<a name="105" href="#105">105</a>                 System.out.println(<span class="jxr_string">"Access controller found: returning"</span>);
<a name="106" href="#106">106</a>                 <strong class="jxr_keyword">return</strong>;
<a name="107" href="#107">107</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (cname.startsWith(<span class="jxr_string">"java."</span>) 
<a name="108" href="#108">108</a>                 || cname.startsWith(<span class="jxr_string">"javax."</span>) 
<a name="109" href="#109">109</a>                 || cname.startsWith(<span class="jxr_string">"junit."</span>) 
<a name="110" href="#110">110</a>                 || cname.startsWith(<span class="jxr_string">"org.apache.tools.ant."</span>)
<a name="111" href="#111">111</a>                 || cname.startsWith(<span class="jxr_string">"sun."</span>)) {
<a name="112" href="#112">112</a>                 <em class="jxr_comment">// Code in these packages is trusted if the caller is trusted.</em>
<a name="113" href="#113">113</a>                 <em class="jxr_comment">//</em>
<a name="114" href="#114">114</a>                 <em class="jxr_comment">// TODO: maybe check class is loaded via system loader or similar rather</em>
<a name="115" href="#115">115</a>                 <em class="jxr_comment">// than checking name? Trusted domains may be different in alternative</em>
<a name="116" href="#116">116</a>                 <em class="jxr_comment">// jvms..</em>
<a name="117" href="#117">117</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (cname.startsWith(<span class="jxr_string">"org.apache.commons.logging.security"</span>)) {
<a name="118" href="#118">118</a>                 <em class="jxr_comment">// this is the unit test code; treat this like an untrusted client</em>
<a name="119" href="#119">119</a>                 <em class="jxr_comment">// app that is using JCL</em>
<a name="120" href="#120">120</a>                 ++untrustedCodeCount;
<a name="121" href="#121">121</a>                 System.out.println(<span class="jxr_string">"Untrusted code [testcase] found"</span>);
<a name="122" href="#122">122</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> SecurityException(<span class="jxr_string">"Untrusted code [testcase] found"</span>);
<a name="123" href="#123">123</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (cname.startsWith(<span class="jxr_string">"org.apache.commons.logging."</span>)) {
<a name="124" href="#124">124</a>                 <strong class="jxr_keyword">if</strong> (permissions.implies(p)) {
<a name="125" href="#125">125</a>                     <em class="jxr_comment">// Code here is trusted if the caller is trusted</em>
<a name="126" href="#126">126</a>                     System.out.println(<span class="jxr_string">"Permission in allowed set for JCL class"</span>);
<a name="127" href="#127">127</a>                 } <strong class="jxr_keyword">else</strong> {
<a name="128" href="#128">128</a>                     System.out.println(<span class="jxr_string">"Permission refused:"</span> + p.getClass() + <span class="jxr_string">":"</span> + p);
<a name="129" href="#129">129</a>                     <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> SecurityException(<span class="jxr_string">"Permission refused:"</span> + p.getClass() + <span class="jxr_string">":"</span> + p);
<a name="130" href="#130">130</a>                 }
<a name="131" href="#131">131</a>             } <strong class="jxr_keyword">else</strong> {
<a name="132" href="#132">132</a>                 <em class="jxr_comment">// we found some code that is not trusted to perform this operation.</em>
<a name="133" href="#133">133</a>                 System.out.println(<span class="jxr_string">"Unexpected code: permission refused:"</span> + p.getClass() + <span class="jxr_string">":"</span> + p);
<a name="134" href="#134">134</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> SecurityException(<span class="jxr_string">"Unexpected code: permission refused:"</span> + p.getClass() + <span class="jxr_string">":"</span> + p);
<a name="135" href="#135">135</a>             }
<a name="136" href="#136">136</a>         }
<a name="137" href="#137">137</a>     }
<a name="138" href="#138">138</a> }
</pre>
<hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body>
</html>

